Automate publication of gradle plugin

Closes gh-27079

ci/scripts/publish-gradle-plugin.sh

@@ -0,0 +1,7 @@
+#!/bin/bash
+
+source $(dirname $0)/common.sh
+
+version=$( cat artifactory-repo/build-info.json | jq -r '.buildInfo.modules[0].id' | sed 's/.*:.*:\(.*\)/\1/' )
+
+git-repo/gradlew publishExisting -p git-repo/config/gradle-plugin-publishing -Pgradle.publish.key=${GRADLE_PUBLISH_KEY} -Pgradle.publish.secret=${GRADLE_PUBLISH_SECRET} -PbootVersion=${version} -PrepositoryRoot=$(pwd)/artifactory-repo